Free Australian pregnancy tool

Is this a faint positive, an evaporation line or nothing?

A coloured line inside the reading window is a positive, however faint. A grey or colourless mark, or any line that appears after the cut-off time, is not a result.

Pregnancy Test Result Guide

No photo is needed for this guide.

Step 1 of 3About 2 minutes

Check safety and the test format first

Symptoms override every line result

Use emergency care for severe or one-sided pain, shoulder-tip pain, heavy bleeding, marked dizziness, fainting, collapse or feeling very unwell.

Which test did you use?

A faint coloured line is hCG; a grey line is not.
Reading late is the main source of false positives.
Without a control line the test cannot be interpreted.

Use this guide to decide whether the line you saw counts as a result.

Everything behind the result

How this tool worksWhy colour and timing matter more than darkness

How this tool works

Why colour and timing matter more than darkness

A pregnancy test line only counts if it has colour and appeared inside the reading window. Everything else is either the test drying or a mark that is not hCG.

Answer three questions about what you saw and when, and the guide tells you whether it counts, and what to do next.

Coloured line in windowPositive, however faint.
Grey or colourless markEvaporation. Not a result.
Line after the cut-offInvalid. Do not read late tests.
No control lineTest failed. Repeat with a new one.
How a test develops over ten minutesStandard 25 mIU/mL strip or midstream
0 to 1 minSample flows. Nothing to read.
1 to 3 minControl line appears.
3 to 5 minRead here. Faint positives show.
5 to 10 minStill valid on most tests.
After 10 minEvaporation lines. Ignore.
Faint pink or blue linePositive. Retest in 48 hours to see it darken.
Grey shadowNot a positive. Retest in two days with morning urine.
Line appeared laterDiscard the reading. Test again as instructed.
The full data tableEvery row this tool reads from.

How a pregnancy test result is classified

Every classification this guide can return, and what produces it. The checks run in this order: symptoms, device condition, control indicator, reading window, then appearance.

How a pregnancy test result is classified
ClassificationWhat produces itWhat it means for the result
Emergency assessmentSevere or one-sided pain, shoulder-tip pain, heavy bleeding, faintingSymptoms override the test. Seek urgent assessment regardless of the lines.
Invalid or unreliableNo control indicator, expired, damaged, stored badly, or a flooded windowThe result cannot be interpreted. Repeat with a new sealed test.
Outside reading windowA mark first seen after the instructed cut-offA late change cannot establish what the timed result was.
Timing uncertainThe reading was not timedThe original result cannot be separated from later drying.
Use the exact instructionsAnother brand, a digital display, or a display that does not matchFertility2Family line rules do not apply to that device.
hCG detectedValid control plus any visible coloured line in the windowPositive, even when faint. Darkness does not indicate how far along.
hCG not detectedValid control, read on time, no second lineNegative at that threshold, in that sample, at that time.
Unclear markA grey, colourless, indented or shadow-like markNot classifiable. This guide does not diagnose an evaporation line from a description.
Incomplete patternNot enough detail entered to classifyRepeat using the instructions supplied with the test.

Line darkness is never used to judge how far along a pregnancy is, its location or its viability. An hCG trigger medicine or a recent pregnancy event changes what a positive means and needs the treating clinic to interpret it.

Test instructionsFertility2Family, or the instructions with your own pack.

Test instructions

Timing and reading rules come from the instructions supplied with the test you are using.

Pregnancy Test Strips
  • Read the result at 5 minutes.
  • A mark appearing after 10 minutes does not count.
  • Follow the instruction sheet supplied with the pack.

Pregnancy Test Strips instructions (PDF)

Midstream Pregnancy Test
  • Read the result at 5 minutes.
  • A mark appearing after 10 minutes does not count.
  • Follow the instruction sheet supplied with the pack.

Midstream Pregnancy Test instructions (PDF)

The full referenceEverything this tool draws on, in detail.Show the detail

A useful answer before more reading

Interpret one fresh test without re-reading an old result

The guide separates invalid tests, late marks, timed coloured lines and unclear results. It does not upload or analyse a photograph.

Control and validity checkTimed result pathwayClear next action

A repeatable interpretation method

Use the same seven checks before acting on a pregnancy-test result

Symptoms

Urgent symptoms override every result.

Medicine

hCG treatment changes the source of a positive.

Device

Expiry, damage or flooding can invalidate it.

Application

Urine contact, MAX line, hold time and single use matter.

Control

No clear control means no valid interpretation.

Timing

Late or untimed changes are not reclassified.

Exact format

Use the symbols and cut-off for that test.

Why this guide does not analyse a photograph

Lighting, camera processing, drying, time since use and unknown product rules can change how a line appears. The guide instead asks for the test conditions that determine whether the result is interpretable.

What line darkness cannot answer

Line darkness does not establish gestational age, the amount or trend of hCG, pregnancy location, viability, embryo number or whether pain and bleeding are safe.

Coloured line, clear control, read on time

For the selected Fertility2Family test instructions, this is treated as hCG detected even when the test line is faint. A trigger medicine or recent pregnancy event can still change where the hCG came from.

No test line, clear control, read on time

hCG was not detected at that device threshold in that urine sample at that time. Early testing, diluted urine and uncertain cycle timing can make a repeat useful.

No clear control

The test is invalid. A line or mark in the test area does not rescue an absent control, so the correct action is a new sealed device.

Late, untimed or colourless mark

The old test stays uncertain. Do not keep checking it as it dries. Use a fresh test, a timer, good lighting and the exact instructions.

Australian evidence and resources

These sources provide general Australian or product context. They do not replace advice from a qualified clinician.

  1. hCG test

    Healthdirect Australia Urine and blood hCG testing, early testing, sample dilution and following the exact test instructions.

  2. Ectopic pregnancy

    Healthdirect Australia Pregnancy-related warning symptoms and when urgent assessment or triple zero (000) is needed.

  3. hCG levels

    Healthdirect Australia The timing limits of hCG detection and why an early result may not settle a pregnancy question.

  4. Pregnancy-test strip instructions (PDF)

    Fertility2Family product instructions Use the supplied instructions for the exact strip collection, reading window and product limitations.

  5. Pregnancy-test midstream instructions (PDF)

    Fertility2Family product instructions Use the supplied instructions for the exact midstream collection, reading window and product limitations.

Frequently asked questions

Is a faint line a positive?
Yes, if it has colour and appeared within the reading time. Retest in 48 hours to confirm it is darkening.
What is an evaporation line?
A colourless mark left as urine dries, usually after the cut-off. It is not a result.
Should I take the test apart to look?
No. Lines inside the casing are not designed to be read and often mislead.
I got a positive then a negative. What happened?
Timing, dilution or a very early loss can all cause it. See your GP if a period does not arrive.
Australian evidence and resourcesShow sources

This is an educational timing aid, not a diagnosis.

Sources: Healthdirect Australia · Fertility2Family

Healthdirect AustraliahCG test
What a home test detects and how to read it.
healthdirect.gov.au ↗
Healthdirect AustraliaPregnancy testing
Faint lines, evaporation lines and when to repeat.
healthdirect.gov.au ↗
Fertility2FamilyPregnancy test strip instructions
Reading window and what counts as a line.
PDF ↗
Fertility2FamilyMidstream pregnancy test instructions
Reading window and what counts as a line.
PDF ↗